Following the instructions here https://github.com/oppia/oppia/wiki/Installing-Oppia-%28Mac-OS%29, I'm trying to get a virtualenv up and running on Mac. All goes well until I try to run python2 -m virtualenv env
At this point I get /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python: No module named virtualenv
I'm not sure what I'm doing wrong here?
Related
I'm trying to run theses commands :
docker-compose pull
docker-compose up -d
docker-compose -f other_file.yaml pull
docker-compose -f other_file.yaml up -d
Here's my Ansible code for this specific task :
- name: Run docker-compose
docker_compose:
project_src: {{ my_project_path }}
files:
- docker-compose.yaml
- other_file.yaml
I'm getting the error bellow
Failed to import the required Python library (Docker SDK for Python: docker (Python >= 2.7) or docker-py (Python 2.6)) on managed's Python /usr/bin/python3.
Please read module documentation and install in the appropriate location.
If the required library is installed, but Ansible is using the wrong Python interpreter, please consult the documentation on ansible_python_interpreter, for example via `pip install docker` or `pip install docker-py` (Python 2.6).
The error was: No module named 'docker'
The fact is that the python interpreter is set up in the ansible.cfg as /usr/bin/python3 which is the good one.
The version of python3 installed is 3.6.9 and the python module "docker" is installed.
Any idea on where this error comes from ? Been reading documentation, and others post all day.
Thanks !
Finally understood why the problem occured.
I was installing the python library with pip3 install <lib> the fact is that it will not work if you're using sudo to run some modules in Ansible because sudo pip3 is different from pip3 on its own.
So quick solution ? sudo pip3 install docker docker-compose
I have problem with activating virtualenv.
I'm working on the server and using SSH secure shell.
My final goal is to activate virtualenv and run the latest version of tensorflow
The following is the command lines:
jeonguyoang#vision6:~$ python3 -m venv tfenv
The virtual environment was not created successfully because ensurepip is not
available. On Debian/Ubuntu systems, you need to install the python3-venv
package using the following command.
apt-get install python3-venv
You may need to use sudo with that command. After installing the python3-venv
package, recreate your virtual environment.
jeonguyoang#vision6:~$ source tfenv/bin/activate
-bash: tfenv/bin/activate: No such file or directory
jeonguyoang#vision6:~$ cd tfenv
jeonguyoang#vision6:~/tfenv$ ls
bin include lib lib64 pyvenv.cfg
jeonguyoang#vision6:~/tfenv$ cd bin
jeonguyoang#vision6:~/tfenv/bin$ ls
python python3
captured image of the commands
I think that there is no activate file.
Maybe re-installing virtualenv is the answer, but I cannot interrupt server settings..
Check if you have python 2 versions of pip and python (python-all & python-pip packages). Venv installs both v2 and v3 versions of python & pip (regardless of python version of venv).
I am on an Ubuntu machine, which has Python 2.7.6 as its default python. It also has Python 3.4.3, with both versions located in /usr/bin/.
I have downloaded virtualenv and virtualenvwrapper. I then downloaded the current version of Python, 3.5.1. In its directory I ran the following commands:
./configure
make
make test
sudo make altinstall
Python 3.5.1 is now installed in /usr/local/bin/.
I now run the following commands:
mkvirtualenv test1
mkvirtualenv test2 -p /usr/bin/python3
mkvirtualenv test3 -p /usr/local/bin/python3.5
Environment test1 successfully created with Python version 2.7.6, and environment test2 successfully created with Python version 3.4.3. However, test3 fails with the following error:
ImportError: No module named 'zlib'
I see mentioned that I need to have "zlib" installed when compiling python to begin with, though make test didn't seem to give any problems. Do I just need to download and compile zlib from www.zlib.net and recompile python3.5?
zlib is a built-in module for Python 3.5.
I think you just need re-compile Python 3.5...
Look that link for Python virtualenv :
https://www.reddit.com/r/linux4noobs/comments/3uwk76/help_using_python_in_linux/
Get python source and extract
wget https://www.python.org/ftp/python/3.5.0/Python-3.5.0.tgz
tar xvf Python-3.5.0.tgz
configure for local install
cd Python-3.5.0/
./configure --prefix=$HOME/python35
make
If it complains about missing dependencies, install them, make clean and repeat.
make install
First of all, I am sorry for asking a question that was asked million times, however, I couldn't resolve my issue.
TL;DR:
psycopg2 builds in Python3.4 virtualenv, but not in Python3.2; suspected dev packages missing, where can I get dev packages for old python releases?
Long story:
I should be writing code for Python3.2 using django with PostgreSQL database engine.
Ubuntu 15.04 by default ships with Python3.4 so I have build Python3.2 from source:
$ python3.2 --version
Python 3.2.6
virtualenv is created so:
myproject $ virtualenv -p python3.2 venv
New python executable in venv/bin/python3.2
Also creating executable in venv/bin/python
Installing setuptools, pip...done.
Installing requirements:
myproject $ source venv/bin/activate
(venv)myproject $ pip install psycopg2
The output log can be found in pastebin.
What I have read there:
GCC finishes whatever its doing without error messages; last non-error reporting line is
running install_lib
then it fails with
Command /home/julka/LP/myproject/venv/bin/python3.2 -c "import setuptools, tokenize;__file__='/tmp/pip-build-cbu7a3/psycopg2/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-cyu65o-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/julka/LP/myproject/venv/include/site/python3.2 failed with error code 1 in /tmp/pip-build-cbu7a3/psycopg2
where it was compiling some lib.
Building with Python3.4
julka#Pyragas-vo2:~/L1P/myproject$ virtualenv -p python3.4 venv
Running virtualenv with interpreter /usr/bin/python3.4
Using base prefix '/usr'
New python executable in venv/bin/python3.4
Also creating executable in venv/bin/python
Installing setuptools, pip...done.
julka#Pyragas-vo2:~/LP/myproject$ source venv/bin/activate
(venv)julka#Pyragas-vo2:~/LP/myproject$ pip install psycopg2 --vv > psycopg2.log
Successfully installed psycopg2
Cleaning up...
(venv)julka#Pyragas-vo2:~/LP/myproject$
Successful installation. I have put the log in pastebin.
Maybe I'm missing some kind of development files for python3.2, what do i need to check this out?
You can cd to YOUR_ENV/lib/pythonxx/site-packages/ and have a look, but is there any convenient ways?
pip freeze list all the packages installed including the system environment's.
You can list only packages in the virtualenv by
pip freeze --local
or
pip list --local.
This option works irrespective of whether you have global site packages visible in the virtualenv.
Note that restricting the virtualenv to not use global site packages isn't the answer to the problem, because the question is on how to separate the two lists, not how to constrain our workflow to fit limitations of tools.
Credits to #gvalkov's comment here. Cf. also pip issue 85.
Calling pip command inside a virtualenv should list the packages visible/available in the isolated environment. Make sure to use a recent version of virtualenv that uses option --no-site-packages by default. This way the purpose of using virtualenv is to create a python environment without access to packages installed in system python.
Next, make sure you use pip command provided inside the virtualenv (YOUR_ENV/bin/pip). Or just activate the virtualenv (source YOUR_ENV/bin/activate) as a convenient way to call the proper commands for python interpreter or pip
~/Projects$ virtualenv --version
1.9.1
~/Projects$ virtualenv -p /usr/bin/python2.7 demoenv2.7
Running virtualenv with interpreter /usr/bin/python2.7
New python executable in demoenv2.7/bin/python2.7
Also creating executable in demoenv2.7/bin/python
Installing setuptools............................done.
Installing pip...............done.
~/Projects$ cd demoenv2.7/
~/Projects/demoenv2.7$ bin/pip freeze
wsgiref==0.1.2
~/Projects/demoenv2.7$ bin/pip install commandlineapp
Downloading/unpacking commandlineapp
Downloading CommandLineApp-3.0.7.tar.gz (142kB): 142kB downloaded
Running setup.py egg_info for package commandlineapp
Installing collected packages: commandlineapp
Running setup.py install for commandlineapp
Successfully installed commandlineapp
Cleaning up...
~/Projects/demoenv2.7$ bin/pip freeze
CommandLineApp==3.0.7
wsgiref==0.1.2
What's strange in my answer is that package 'wsgiref' is visible inside the virtualenv. Its from my system python. Currently I do not know why, but maybe it is different on your system.
In Python3
pip list
Empty venv is
Package Version
---------- -------
pip 19.2.3
setuptools 41.2.0
To create a new environment
python3 -m venv your_foldername_here
Activate
cd your_foldername_here
source bin/activate
Deactivate
deactivate
You can also stand in the folder and give the virtual environment a name/folder (python3 -m venv name_of_venv).
Venv is a subset of virtualenv that is shipped with Python after 3.3.
list out the installed packages in the virtualenv
step 1:
workon envname
step 2:
pip freeze
it will display the all installed packages and installed packages and versions
If you're still a bit confused about virtualenv you might not pick up how to combine the great tips from the answers by Ioannis and Sascha. I.e. this is the basic command you need:
/YOUR_ENV/bin/pip freeze --local
That can be easily used elsewhere. E.g. here is a convenient and complete answer, suited for getting all the local packages installed in all the environments you set up via virtualenvwrapper:
cd ${WORKON_HOME:-~/.virtualenvs}
for dir in *; do [ -d $dir ] && $dir/bin/pip freeze --local > /tmp/$dir.fl; done
more /tmp/*.fl
why don't you try pip list
Remember I'm using pip version 19.1 on python version 3.7.3
If you are using pip 19.0.3 and python 3.7.4. Then go for pip list command in your virtualenv. It will show all the installed packages with respective versions.
.venv/bin/pip freeze worked for me in bash.
In my case the flask version was only visible under so I had to go to
C:\Users\\AppData\Local\flask\venv\Scripts>pip freeze --local
Using python3 executable only, from:
Gitbash:
winpty my_venv_dir/bin/python -m pip freeze
Linux:
my_venv_dir/bin/python -m pip freeze